ubuntu-x-swat team mailing list archive

[Gursimran singh Mohar <simar.i3r@xxxxxxxxx>]

Tomas,
Perhaps this is the only patch in my knowledge too.

On 11/12/10, Tomas Janousek <lis@xxxxxxx> wrote:
> Oh. Could you perhaph give me a link to that patch? I guess it's less
> hacky than this patch of mine. Thanks.
>
> --
> Synaptics cursor speed is not screen-dependent - speed on small screen is
> too high after connecting big external monitor
> https://bugs.launchpad.net/bugs/523558
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “xserver-xorg-input-synaptics” package in Ubuntu: Invalid
>
> Bug description:
> Binary package hint: xserver-xorg-input-synaptics
>
> The cursor speed of a Synaptics pad depends on your screen size. Or rather,
> "the speed value defines the scaling between touchpad coordinates and screen
> coordinates." (man synaptics, line ~418). So supposedly, even if you raise
> or lower your resolution, moving your finger n millimetres across the pad
> surface should still make it move the cursor n centimetres across your
> screen, regardless of whether the screen's pixel resolution is at 800x600 or
> at 1600x1200.
>
> Connecting an external monitor seems to count as adding screen realestate,
> affecting the "effective screen speed" as much as raising your resolution by
> that of the external monitor would. To put into a concrete example: if your
> netbook screen is 1024x600, and you connect a 1600x1200 monitor, then the
> screen realestate becomes 2624x1200 if put side-by-side, or 1600x1800 if put
> above the other. (Unsure of the details of how the driver calculates this.)
>
> The sensitivity that you get on your 1024x600 netbook screen, when the
> Synaptics driver scales its speed to match your total 2624x1200 realestate,
> is much too high.
>
> How to reproduce:
> 1) Acquire a netbook with a puny ~10" screen with 1024x600 native resolution
> (MSI Wind, et al)
> 2) Get a feel for the touchpad's cursor speed
> 3) Attach 1600x1200+ external monitor
> 4) Using xrandr, set the external monitor's output to be next to or above
> the laptop screen's output, as such;
>    $ xrandr --output VGA1 --above LVDS1 --auto
> 5) Compare cursor speed to earlier speed
> 6) Try to perform simple to complex mouse tasks on your small screen and
> watch the cursor consistently overshoot
>
> The speed is acceptable when maneuvering on the external monitor, but very
> little physical pad movement is needed to totally pan over the entirety of
> the small netbook screen.
>
> Cursor speed should be screen-dependent, if that's even technically
> possible. Alternatively, it should only take the "primary" screen (output)
> into consideration when scaling pad movement speed to screen cursor speed.
>
> ProblemType: Bug
> Architecture: i386
> Date: Thu Feb 18 01:11:21 2010
> DistroRelease: Ubuntu 10.04
> DkmsStatus:
>  ipheth, 1.0+git20100207, 2.6.32-12-generic, i686: installed
>  ipheth, 1.0+git20100207, 2.6.32-13-generic, i686: installed
> InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100201)
> MachineType: MICRO-STAR INTERNATIONAL CO., LTD U-100
> Package: xserver-xorg-input-synaptics 1.2.0-3ubuntu2
> ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-13-generic
> root=UUID=bfe2926e-f8bf-41dd-a237-690b609cafe6 ro quiet splash
> ProcEnviron:
>  LANGUAGE=
>  PATH=(custom, user)
>  LANG=en_US.UTF-8
>  SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.32-13.18-generic
> RelatedPackageVersions:
>  xserver-xorg 1:7.5+1ubuntu2
>  libgl1-mesa-glx 7.7-0ubuntu8
>  libdrm2 2.4.17-1ubuntu1
>  xserver-xorg-video-intel 2:2.9.1-1ubuntu4
> SourcePackage: xserver-xorg-input-synaptics
> Uname: Linux 2.6.32-13-generic i686
> dmi.bios.date: 10/06/2008
> dmi.bios.vendor: American Megatrends Inc.
> dmi.bios.version: 4.6.3
> dmi.board.asset.tag: To be filled by O.E.M.
> dmi.board.name: U-100
> dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
> dmi.board.version: Ver.001
> dmi.chassis.asset.tag: To Be Filled By O.E.M.
> dmi.chassis.type: 3
> dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
> dmi.chassis.version: Ver.001
> dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvr4.6.3:bd10/06/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnU-100:pvrVer.001:rvnMICRO-STARINTERNATIONALCO.,LTD:rnU-100:rvrVer.001:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvrVer.001:
> dmi.product.name: U-100
> dmi.product.version: Ver.001
> dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD
> system:
>  distro:             Ubuntu
>  architecture:       i686kernel:             2.6.32-13-generic
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/523558/+subscribe
>


-- 
Warm Regards,
Gursimran singh Mohar

-- 
Synaptics cursor speed is not screen-dependent - speed on small screen is too high after connecting big external monitor
https://bugs.launchpad.net/bugs/523558
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